#VU17846 Input validation error in Firepower 9000 Series - CVE-2019-1700
Published: February 22, 2019
Vulnerability identifier: #VU17846
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2019-1700
CWE-ID: CWE-20
Exploitation vector: Adjecent network
Exploit availability:
No public exploit available
Vulnerable software:
Firepower 9000 Series
Firepower 9000 Series
Software vendor:
Cisco Systems, Inc
Cisco Systems, Inc
Description
The vulnerability allows an adjacent attacker to perform a denial of service (DoS) attack.
The vulnerability exists in field-programmable gate array (FPGA) ingress buffer management due to a logic error in the FPGA related to the processing of different types of input packet. An adjacent attacker can send a specially crafted sequence of input packets to a specific interface on an affected device, cause a queue wedge condition on the interface and cause the affected device to stop processing any additional packets that are received on the wedged interface.
Remediation
Install updates from vendor's website.